Packing bag



R. FAILLOT PACKING BAG May 8, 1945.

Filed Feb. 1. 1943 7 filial/lira? Patented May 8, 1 945 2,375,544 IPACKING BAG Ren Faillot, Paris, France; vested in the Alien -PropertyCustodian I Application February 1, 1943, Serial No. 474,373 I In FranceFebruary 9, 1940 "7 Claims. =(o1. 229 -55) The invention relates toimprovements in paper and similar material bags wherein .the bottom orsome other seam of the bag is formed by sewing or stapling togetheropposedmarginal edge portions of a tubular or other bag body, themarginal edge portions being covered by a strip of paper or fabricmaterial whereby the bottom other seam is rendered sift proof. I i

In the majority of bagsof this known class,

the sewing thread, on the outside, is always inv contact with the openair, and the holes for pass.-

ing the thread areexposed so that external moisture can attack thethread or stapling and destroy it, and penetrate into the interior ofthe bag at a somewhatrapid rate by passing through the sewing holes, anddamage the contents of v the bag.

In the present invention the sewing thread or wire stapling is protectedagainst bothexternal and internal destructive influences, and moistureis positively prevented from passing through the thread or staple holesand reaching the contents of the bag and the contents cannot sift fromthe bag.

In the accompanying drawing, showing examples:

Fig. l is a fragmentary vertical cross-section taken through the bottomof an improved bag according to the present invention.

Fig. 2 is a modification thereof.

The.known paper bags, especially those of large size usually consist ofseveral superposed sheets of paper I assembled in the form of a flattube, with the opposed marginal portion of the bottom covered orbordered with a strip 2 of paper or like material,v and a line 3 ofthread or wire allowing the use of longer stitches in the line 3,

thereby. enabling savings of thread or stapling wire.

It is possible, as shown .in Fig. 2, tolal so apply in the interior ofthe bag,'at the junction of the two edges of the bottom of the bag,alayer 6 of a protecting substance, such as asphalt, bitumen,

tar, or the like, and to cover it,.or not asdesired,

with a strip of paper 'l'or other similar material, whereby, the line 3of thread or wire is protected 7 from the action of the contents of thebag.

Like advantages can be obtained if the edge ofthe bagare joined togetherby metal clasps or clamps'instead of by sewing.

' The same arrangements are applicable to seams for bags, whatever bethe number and the position of such seams. Obviously, such arrange-' ofpacking material, connecting means passing through superimposed marginalportions of at least two of said sheets on at least one side of said twosheets so as to connect said sheets along said side, a layer ofwaterproofing material rej maining somewhat pasty and covering theinside faces of said marginal portions adjacent to said connecting meansto prevent contact of the contents of the bag with said inside faces andsaid connecting means.

stapling applied in such a way as to secure the strip 2 and the edges ofthe bagtogether.

According to the present invention, the line 3 is protected by a thicklayer 4 of a waterproof product which remains always somewhat pasty orflowable. The layer 4 is covered by a strip 5 of paper, cloth, or otherflexible material, which is secured at its edges to the bag walls at 5aand perfectly and definitely close up the thread and staple holes, andprotect the-thread or wire from deterioration.

The invention has the 2. A packing bag as claimed in claim 1 where in aband of flexible material is applied on said layer of waterproofingmaterial preventing contact-of the contents of the bag therewith. 3..Apacking bag as claimed in claim 1, in

' which said waterproofing material is asphalt.

further. advantage of -4.A packing bag comprising two superposed sheetsof packing material, connecting means passing through two adjacent edgesof said sheets on at least one side of said sheets so as to con-.

nect said sheets along said side, a layer of waterproofing materialremaining somewhat pasty and covering the external faces of said edgesand said connecting means, a. band of flexible material enveloping saidlayer of waterproofing material, another layer of waterproofing materialremaining somewhat pasty and covering the portions of the inner faces ofsaid edges adjacent-to said connecting means and directed towards the Ii The association of the layer 4 and the paper strip 5 greatlystrengthens the bottom of. the bag.

' substantialcross section coveringsaid interme t. diate portion, andsaid lateral portions ofthe renently: plastic adhesive material adaptedto-seal 'ing means, and the portions oi'the bag sidesinside of. the bag,and another band of flexible material applied on said last mentionedlayer of Waterproofing material. l I I 5. A bag comprising two opposedsides each composed of at least one sheet of flexible material on theorder of paper, the two sides'having superimposed marginalportions, a,reinforcing strip of flexible material having an intermediate}- portionbent around the terminal edges of bothp of said, marginal portions andhaving lateral 10 portions engaging the outer sides of said mar-t ginalportions, fastening means eflectively engag-- 1 ing said lateralportions of the reinforcing strip in a manner to clamp together thereinforcing strip and the marginal portions of the sides the bag, acontinuous waterproof coating oi tively engaging said sides of thereinforcing strip in 'a manner to clamp together the reinforcing stripand the marginal portions of the sides of stantial cross sectioncovering said intermediate portionsand said sides of the reinforcingstrip andly'covering also said fastening means, said adhesive materialadapted to seal any separations'which may occur in the conjunction ofsaid reinforcing strip, said fastening means, and the portions of thebag, sides enclosed therebsuand aprotec'tive strip of flexible materialincluding around andi: protectively enclosing the said coat-. "-ing'a'nd'adhering thereto and a mass of perma- ,nen t ly plastic waterproofadhesive material within the bag and disposed between the sides oithebag immediatelyadiacent to and in sealinforcing strip and coveringalso said fasten? means, said coating being composed of perma 20 anyseparations-which may" occn-rinthecan, junction, of said reinforcingstrip, said fasten-4 composed of at: least one sheet of'flexibl'e'mateclosed thereby, and aprotective strip of flexible 2materiaP-includmg an intermediate portionandy sides bent around andprtotectively enclosing theisai'd coating adhering thereto; thetern'iina-l edges ofthe protective strip being secured to the'superimposedmarginal portions, and fastening means-traversing securingthe marginal por-- tions together, and a. seal consisting ofi a massof"- permanently plastic adhesive waterproof outer sides of the bagsides. I 30; A com-p twa opposed Sides to-the inner surfaces at the bagsides: along and composed; of at least on'efsheet of gfiexib'le mate-1 YI v, rial-onthe order of paper; the two sides having mn means 9"Q Y Gamam superimposed marginal portions, a reinforcing of kg stri'pof flexiblematerial having an'i'nter nediatg as:v i nnni 'mnno'ri 1 portion bentaround the terminal edges of both of said marginal portions, fasteningmeans efiecthe bag a continuous waterproof coating of subcoating beingcomposed of permanently plastic an intermediate portion and lateralportions bent ing relation to: the conjunction of -the bag sides- 3 '7.In a bag comprising two opposedsideseach.-v

ria=l= on: the order of: papen the-two sides having I material disposedwithin the bag and adheringsealing the therein exposedportions ofsaidfas-

